The advantage of 2 outputs and 1 inputs: the Coolreall power bank has USB-A outputs , a USB-C output (5V/3A) and a micro USB port input (5V/2A). With the right cable, you can charge your electronic devices and share them with friends and family anytime, anywhere. Advanced flame retardant plastic housing prevents damage to the battery. The built-in 2023 smart upgrade chip protects your phone's battery from abnormalities such as over-current, overheating and overcharging.